Add up all the numbers from 1 to 1000, w/ no calculator

To add up all the numbers from 1 to 1000 doesn’t require a calculator. It’s easy and simple - you just need to know the trick. This is an example of an arithmetic series, which we’ll talk about in another video. Music in this video: “Juan Sánchez - Now The Silence“ is under a Creative Commons (cc-by) license Music promoted by BreakingCopyright: #maths